gerrit.onap Code Review - ccsdk/cds.git/blob

   1 /*
   2  * Copyright © 2018-2019 AT&T Intellectual Property.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.onap.ccsdk.cds.blueprintsprocessor.functions.message.prioritization.utils
  18
  19 import org.apache.kafka.streams.processor.ProcessorSupplier
  20 import org.onap.ccsdk.cds.blueprintsprocessor.core.service.BluePrintClusterService
  21 import org.onap.ccsdk.cds.blueprintsprocessor.core.service.ClusterLock
  22 import org.onap.ccsdk.cds.blueprintsprocessor.functions.message.prioritization.AbstractMessagePrioritizeProcessor
  23 import org.onap.ccsdk.cds.blueprintsprocessor.functions.message.prioritization.PrioritizationConfiguration
  24 import org.onap.ccsdk.cds.blueprintsprocessor.functions.message.prioritization.db.MessagePrioritization
  25 import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintProcessorException
  26 import org.onap.ccsdk.cds.controllerblueprints.core.service.BluePrintDependencyService
  27
  28 object MessageProcessorUtils {
  29
  30     /** Utility to create the cluster lock for message [messagePrioritization] */
  31     suspend fun prioritizationGrouplock(
  32         clusterService: BluePrintClusterService?,
  33         messagePrioritization: MessagePrioritization
  34     ): ClusterLock? {
  35         return if (clusterService != null && clusterService.clusterJoined()) {
  36             val lockName = "prioritization-${messagePrioritization.group}"
  37             val clusterLock = clusterService.clusterLock(lockName)
  38             clusterLock.lock()
  39             if (!clusterLock.isLocked()) throw BluePrintProcessorException("failed to lock($lockName)")
  40             clusterLock
  41         } else null
  42     }
  43
  44     /** Utility used to cluster unlock for message [messagePrioritization] */
  45     suspend fun prioritizationGroupUnLock(clusterService: BluePrintClusterService?, clusterLock: ClusterLock?) {
  46         if (clusterService != null && clusterService.clusterJoined() && clusterLock != null) {
  47             clusterLock.unLock()
  48             clusterLock.close()
  49         }
  50     }
  51
  52     fun <K, V> bluePrintProcessorSupplier(name: String, prioritizationConfiguration: PrioritizationConfiguration):
  53         ProcessorSupplier<K, V> {
  54         return ProcessorSupplier<K, V> {
  55             // Dynamically resolve the Prioritization Processor
  56             val processorInstance = BluePrintDependencyService.instance<AbstractMessagePrioritizeProcessor<K, V>>(name)
  57             processorInstance.prioritizationConfiguration = prioritizationConfiguration
  58             processorInstance
  59         }
  60     }
  61 }